#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
int main()
{
  printf("code ready!\n");
  
  int i = 0;
  while(i <= 1000)
  {
    i++;
    printf("hello linux, my_pid is %d, my ppid is %d\n", getpid(), getppid());
    sleep(1);
  }

  return 0;
}
